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碳生产率能将低碳经济的两大目标融为一体,工业部门作为能源密集型部门,是二氧化碳排放的主体,其碳生产率的变化深刻影响着中国整体碳生产率的格局。目前,大部分学者都用GDP与二氧化碳排放量的比值作为衡量碳生产率的指标,然而二氧化碳排放空间作为一种投入要素,其产出除了经济绩效外还包括环境、就业等综合绩效。本文基于广义碳生产率的概念,通过对前沿分析方法的比较,选择基于方向性距离函数的DEA方法,测算了中国工业部门各细分行业从2004-2009年的广义碳生产率指数,并对其变化进行了分解。结果表明:(1)中国工业部门广义碳生产率指数整体小于1,说明广义碳生产率水平整体上存在下降的趋势;(2)引致工业部门广义碳生产率指数整体小于1的主要原因是技术效率和规模效率低下。
Carbon productivity can combine the two major goals of a low-carbon economy. As an energy-intensive sector, the industrial sector is the main body of carbon dioxide emissions. Its changes in carbon productivity have a profound impact on the overall pattern of carbon productivity in China. At present, most scholars use the ratio of GDP to carbon dioxide emissions as an indicator of carbon productivity. However, the carbon dioxide emission space is an input element, and its output includes comprehensive performance such as environment and employment in addition to its economic performance. Based on the concept of generalized carbon productivity, this paper chooses the DEA method based on the directional distance function to calculate the generalized carbon productivity index from 2004 to 2009 in all sub-sectors in China’s industrial sector based on the concept of generalized carbon productivity. Decomposed. The results show that: (1) The generalized carbon productivity index of China’s industrial sector is less than 1 as a whole, indicating a general downward trend of the generalized carbon productivity; (2) The main reason causing the overall carbon productivity index of the industrial sector to be less than 1 is the technical efficiency and scale low efficiency.